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Finding the Fourth Proportional to 18,413.20, 25,480.20 and 15,934.60

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Solution

The fourth proportional to 18,413.20, 25,480.20 and 15,934.60 is: 22,050.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,413.20 : 25,480.20 = 15,934.60 : x
  2. Step 2: Convert to fraction form
    18,413.20/25,480.20 = 15,934.60/x
  3. Step 3: Cross multiply
    18,413.20x = 25,480.20 × 15,934.60
  4. Step 4: Simplify right side
    18,413.20x = 406,016,794.92
  5. Step 5: Solve for x
    x = 406,016,794.92/18,413.20
  6. Step 6: Final answer
    x = 22,050.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.